What this controller is
The Fuji Electric PXF5APE2-MVMA1 is a self-tuning 1/8 DIN (48 x 96mm) compact temperature and process controller with a 50ms sampling speed. It's a current-production part, so this is what you'd specify into a new BOM line or order as a direct replacement for an existing PXF5 installation.
What the key specs mean for panel fit
The 1/8 DIN form factor (48 x 96mm) is the standard panel cutout for a single-loop controller — it slides into the same hole as any other 1/8 DIN unit, so swapping an older controller or specifying this into a new panel doesn't require re-punching the panel. The 50ms sampling speed means it reads the input and updates the output every 50 milliseconds, which is fast enough for most thermal processes (ovens, extruders, packaging seal bars) but not for sub-cycle response on fast electric heating — that would need a 10ms or faster unit. Self-tuning means the auto-tune routine runs at startup to set PID gains; it's not adaptive tuning that continuously adjusts during the process.